Significant Heat in the Northwest U.S.; Tropical Rainfall Potential in the Southwest U.S.

A significant late season heat wave continues in the interior Pacific Northwest for at least one more day before easing somewhat Friday into Saturday. A combination of monsoonal moisture and tropical moisture ahead of tropical cyclone Lorena will bring a marginal to slight risk of excessive rainfall across the southwest U.S. through Saturday which may bring areas of flooding. Read More >

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Last Map Update: Thu, Sep 4, 2025 at 11:06:09 am MST

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National Weather Service NWS Tucson Arizona

Flood Watch

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Hazardous Weather Outlook

Today's Precipitation Forecast

Flood Watch Today

Hurricane Lorena will continue to provide additional moisture into northern Arizona. Heaviest rainfall will likely be across Yavapai County and Gila County, but we cannot completely rule out isolated heavy rainfall from training storms elsewhere.

A Flood Watch has been issued for Yavapai County and northern Gila County for this afternoon/evening. Similarly, WPC issued a Slight Risk for the same areas in reference to the potential for excessive rainfall. This surge of moisture is from Hurricane Lorena, and we'll continue to see showers/storms through Saturday.